Now showing items 61-70 of 156
Effects of mergers and core structure on the bulk properties of nearby galaxy clusters
(Univ Chicago Press, 2006-03-01)
We use X-ray morphological measurements and the scatter of clusters about observed and simulated scaling relations to examine the impact of merging and core-related phenomena on the structure of galaxy clusters. We use a ...
Supergravities with Minkowski × sphere vacua
(IOP Publishing Ltd, 2004-10-01)
Recently the authors have introduced a new gauged supergravity theory with a positive definite potential in D = 6, obtained through a generalised Kaluza-Klein reduction from D = 7. Of particular interest is the fact ...
Clustering of dark matter halos on the light cone: Scale, time, and mass dependence of the halo biasing in the Hubble volume simulations
(Univ Chicago Press, 2001-11-10)
We develop a phenomenological model to predict the clustering of dark matter halos on the light cone by combining several existing theoretical models. Assuming that the velocity field of halos on large scales is approximated ...
Production and fragmentation of the D*0 meson in e+e- annihilations at [radical sign]s=29 GeV
(Elsevier, 1987-01-08)
Neutral D* meson production in e+e- annihilation at [radical sign]s=29 GeV has been studied using the high resolution spectrometer. The decay of D*0 into D0[gamma], where the D0 decays into K-[pi]+, has been observed. The ...
Astronomical Image Subtraction by Cross-Convolution
(2008-04-11)
In recent years, there has been a proliferation of wide-field sky surveys to search for a variety of transient objects. Using relatively short focal lengths, the optics of these systems produce undersampled stellar images ...
Predictions and tests of the hypothesis of limiting fragmentation
(Elsevier, 1970-08-17)
It is shown that the hypothesis of limiting fragmentation predicts the way in which the cross sections for production of fast particles in the laboratory should scale with beam energy. The agreement with experiment is ...
The Mark II detector for the SLC
(Elsevier, 1989-08-20)
The Mark II detector has been upgraded in preparation for its role as the first detector to take data at the Stanford Linear Collider. The new detector components include the central drift chamber, the time-of-flight system, ...
Measuring the Mean and Scatter of the X-Ray Luminosity-Optical Richness Relation for maxBCG Galaxy Clusters
(Univ Chicago Press, 2007-03-01)
Determining the scaling relations between galaxy cluster observables requires large samples of uniformly observed clusters. We measure the mean X-ray luminosity-optical richness (L¯X-N¯200) relation for an approximately ...
Expectations for an interferometric Sunyaev-Zeldovich effect survey for galaxy clusters
(Univ Chicago Press, 2000-12-01)
We estimate the expected yield of a nontargeted survey for galaxy clusters using the Sunyaev-Zeldovich effect (SZE). Estimating survey yields requires a detailed model for both cluster properties and the survey strategy. ...
A cold front in a preheated galaxy cluster
(Univ Chicago Press, 2002-10-10)
We present a simulated cluster of galaxies, modeled with a preheated intracluster medium, that exhibits X-ray features similar to the cold fronts seen in Chandra observations. Mock observations at a particular epoch show ...